標題: | Great enhancements in the thermoelectric power factor of BiSbTe nanostructured films with well-ordered interfaces |
作者: | Chang, Hsiu-Cheng Chen, Chun-Hua Kuo, Yung-Kang 材料科學與工程學系 Department of Materials Science and Engineering |
公開日期: | 2013 |
摘要: | An innovative concept of twin-enhanced thermoelectricity was proposed to fundamentally resolve the high electrical resistance while not degrading the phonon scattering of the thermoelectric nanoassemblies. Under this frame, a variety of highly oriented and twinned bismuth antimony telluride (BixSb2-xTe3) nanocrystals were successfully fabricated by a large-area pulsed-laser deposition (PLD) technique on insulated silicon substrates at various deposition temperatures. The significant presence of the nonbasal- and basal-plane twins across the hexagonal BiSbTe nanocrystals, which were experimentally and systematically observed for the first time, evidently contributes to the unusually high electrical conductivity of similar to 2700 S cm(-1) and the power factor of similar to 25 mu W cm(-1) K-2 as well as the relatively low thermal conductivity of similar to 1.1 W m(-1) K-1 found in these nanostructured films. |
URI: | http://hdl.handle.net/11536/22439 http://dx.doi.org/10.1039/c3nr01499a |
ISSN: | 2040-3364 |
DOI: | 10.1039/c3nr01499a |
期刊: | NANOSCALE |
Volume: | 5 |
Issue: | 15 |
起始頁: | 7017 |
結束頁: | 7025 |
顯示於類別: | 期刊論文 |